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Trying to run tests (right click on package with tests -> Run tests in [module name]) ends with message:
'0 test classes found in package '<default package>'

The same steps in Android Studio 3.1.3 ends with properly running tests

Build: 3.3 Canary 3, AI-181.5281.24.33.4884283, 201807101934,

AI-181.5281.24.33.4884283, JRE 1.8.0_152-release-1136-b04x64 JetBrains s.r.o, OS Mac OS X(x86_64) v10.13.6 unknown, screens 2048x1080, 1680x1050; Retina

Android Gradle Plugin: 3.1.2
Gradle: 4.8
NDK: from local.properties: (not specified); latest from SDK: (not found);
LLDB: pinned revision 3.1 not found; latest from SDK: (package not found);
CMake: from local.properties: (not specified); latest from SDK: (not found); from PATH: (not found);
 

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